The total router weight 10 pound, so I guess the main unit alone should weight around 8 pounds?
That’s roughly twice the weight of the makita unit
The LR3 can lift pretty heavy routers though , you may need to switch to a finer pitch lead screw and/or 4 start leadscrew, and slow down the Z speed a little
I have 1mm pitch leadscrews on mine, and it wont drop under the weight of the router, even when the motors are not powered up.
I’d be more concerned about the main unit’s diameter and height than the weight
This router is 3 ⅝” (=~90mm) in diameter, vs the intended 2.5" (65mm) makita router
This would require you to design a custom mount…
I’ve seen 80mm mounts done already (LR3 80mm Water Cooled Spindle - #19 by jrs), but at 90mm, you may hit a limit with the core’s size (the round recess in the core might be too shallow) and this will require substantial modifications
Also, witha taller unit, you might need to add some support on top to avoid leverage… see above mentionned post about this